Patent US2621701A successfully refreshed from Google Patents.
US2621701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing threaded tube ends
Assignee: Individual
•
Filing: 1949-07-22
•
Granted: 1952-12-16
•
Expires: 1969-07-22
Abstract
No abstract record available.
Inventors
- 👤 Alexander W Galbraith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:36
CPC Classifications
B; B21; B21H; B21H3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US73929A
Cited
US198886A
Cited
US319144A
Cited
US369417A
Cited
US390899A
Cited
US425516A
Cited
US721114A
Cited
GB190610727A
Cited
US1044873A
Cited
US1465484A
Cited
US1837294A
Cited
US2005631A
Cited
FR806400A
Cited
US2261056A
Cited
US2476656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |